Mig welding uphill with c25 gas requires lower settings that shown on a mig settings chart. Especially on an outside corner joint.
Downhill is easy. But you risk lack of fusion on anything thicker than 1/8".
So it pays to be able to mig weld uphill.
17.4 volts 170 imp.035”er70s6
WELD PROCESS = GMAW, SHORT CIRCUIT MIG, GAS METAL ARC, BARE WIRE MIG
METAL TYPE = CARBON STEEL, COLD ROLLED STEEL, AISI 1010
THICKNESS = 1/4"
WELD TYPE = Fillet weld
JOINT TYPE = CORNER JOINT
POSITION = 3f vertical uphill
VOLTS = 17.4 volts
WIRE SPEED = 170 IPM
WIRE SIZE = .035"
POLARITY = DCEP
GAS FLOW = 20-25 CFH C25 GAS
CTWD = 3/8”-1/2"
FILLER METAL = ER70S6
ADDITIONAL SETTINGS =
TIPS:A relatively short stickout aka contact to work distance CTWD of 3/8” to 1/2" makes a big difference.
The technique shown is simple series of upside down V motion.This technique sweeps the arc across the front leading edge of the puddle and helps ensure penetration.